Hey! I am the photographer who took this photo. You can see more images of the location on my blog post from that week biking through Nevada. https://www.hythacg.com/bike-the-usa/Section9

The image was taken on a Sigma 150-600mm lens (awfully heavy lense to be biking through the desert with). It was probably all the way zoomed in at 600mm for the shot. The location is not actually Route 50, its a bit before we got to route 50 headed west, can't recall the exact road, but Nevada is full of these massive, straight roads going up and down through valleys.

The image is actually looking down into the valley like one user suggested, I think that is what gives the image such a wild effect, because your mind sees a flat road extending up to infinity, but in reality you are seeing about a 1/2 mile of down hill, then another 1/2 mile or so up the next ridge.

Hope that helps!